If you want to use an existing html file then you could place this in the theme directory and then open the file with a link button making sure the target is your environment url followed by /htmlfile.html
If you are running on localhost:8080 and the file is named testMx.html the link button target should be: http://localhost:8080/testMx.html
Using the attribute option would allow you to configure the url to make sure this will work on the different environments. Using the html/javascript widget is also a good option and would allow you to open the file in a new tab e.g.
Hi Ping,
You can use the html snippet to load the html file or just copy and paste the html into this widget.
https://appstore.home.mendix.com/link/app/56/Mendix/HTML/-JavaScript-Snippet
Erwin
I did try it this way.
I put a 'test.html' under: <myproject folder>/theme
And I put http://localhost:8080/test.html
But I got 404 error shown below. Is there security related to this?